Flour-bolt



(No Model.)

2 Sheets-Sheet l.

J. JOHNSTON.

FLQUR BOLT.

Patented May 21 1889. it@ a@ I ATTORNEYS.

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WITNESSBS 2 WZ/ (No Model.) 2 Sheets-Sheet 2.

J. JOHNSTON.

l FLOUR BOLT. No. 403,757. Patented May 21 1889..

WITNESSBS v v INVENTOR;

ATTORNEYS.

N PEIERS. mummy-wlw, Wampas D. C.

UNITED STATES PATENT OFFICE.

JOI-ITN JOHNSTON, OF NEENAH, WIQSCONSIN.

FLOU R-BOLT.

SPECIFICATION forming part of Letters Patent No. 403,757, dated May 21,1889.

Application filed .l'uly 20, 1887. Serial No. 244.831. (No model.) v

To @ZZ whom t may concern.-

Be it known that I, JOIN JOHNSTON, of Neenah, in the county of Winnebagoand State of Wisconsin, have invented a new and Improved Flour-Bolt, ofwhich the following is a full, clear, and exact description.

This invention relates to Hour-bolts; and it consists in the novelfeatures hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forminga part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a side View of my improved fiour-bolt. parts being shown insection. Fig. 2 is an end view of the same. Fig. 3 is an enlarged detailview illustrating thev construction of the adjustable feeding device.Fig. 4.is an enlarged detail view, in partial section, illustrating theconstruction of the upper portion of the bolt-hanging attachments; andFig. 4 is a similar view of the lower portion of the same, but in aposition at right angles to Fig. 4. Fig. 5 is a perspective View of theconstruction illustrated in Figs. 4 and 4. Fig. 6 is a sectional detailview illustrating the construction of the bo1t' ing-frame, one of theclearing-balls used in connection with said frame being represented inconnection therewith; and Fig. 7 is a detail view of one of thecrank-disks.

In the drawings, 10 represents the main frame of the machine,to theupper portion of which frame there are secured four bracket-s,

11', formed with longitudinal slots 2, adapted to receive bolts 12,which bolts engage with hanger-arms 13, said arms extending inward atrightangles to the longitudinal strips of the 'frame 10 to be carrieddownward in perpendicular lines, the perpendicular sections of the armsbeing slotted, as shown at 3, to provide for the adjustable connectionof the hanger-brackets proper, which are shown at 14, saidhanger-brackets being secured to the perpendicular sections of the arms13 by bolts 15, and in order that there may be a direct support for thehanger-brackets, Iprovide setsorews 16, which engage with apertures thatare formed in lugs or ears 17, that extend inward from the perpendicularsections of the arms 13.

The hanger-brackets 14 are slotted at 4 to provide for the adjustmenttoward or from the main frame of the hangers 18, which said hangers areprovided with upper universal joints, 19, and lower universal joints,20, the lower sections of the joints 2O being connected to brackets 2l,that are secured to the sides of the sieve-frame 22. This sieve-frame 22is provided with three slats, 23, that are apertured to provide for thepassage of screws 24, which engage with blocks 25, that are secured tothe bolting-cloth 2G, the cloth being normally upheld by springs 27,Athat are coiled about the screws 24 and abut against the slats 23 andthe blocks 25, this arrangement permitting a certaindepression orlowering of the cloth, but preventing any upward movement beyond thenormal line.

To each end of the sieve-frame 22, I secure arms 30, the ends of whichare provided with sockets 3l, that are adapted to receive crankpins 32,said pins being mounted in slides 5, that are formed in the crank-disks33, Said crank-disks 33 are carried by vertical shafts 34 and 35, whichshafts are stepped in bearings 36 and guided by upper-bearings, 37. Theshafts 34 and 35 carry bevel-pinions 38, that engage with bevel-gears 39carried by a shaft, 40.

Across the end of the machine the main driving-shaft 41 is mounted, andthis shaft carries a spur-gear, 42, which en gages a smaller spur-gear,43, that is carried by an upper shaft, 44, which said upper shaft inturn carries a bevel-pinion, 45, that engages the bevelgear 39, so thatas the shaft 4l is revolved motion will be transmitted therefrom to theshaft 40, 'and from said shaft. to the shafts 34 and 35, thus impartinga similar motion to said shafts 34 and 35. The shaft 4l also carries abevel-gear, 46, which engages a similar gear, 47, that is carriedby anupper conveyer-shaft, 48, this shaft 48 carrying a gear, 50, whichengages a gear, 51, that is carried by a lower conveyer-shaft. l

Above the sieve-frame I mount a feeder, 60, which is fed from a. hopper,61, and beneath this feeder I adjustably mount a swinging plate, 62,said plate being provided with lugs 63, which holdupwardly-extendingrods 64, that pass through apertured lugs 65, formed upon arms 66, thatare rigidly connected to a rook-shaft, 67. Between the lugs 65, Iarrange IOO springs (i8, one end of these springs abutting against thelower lugs, while the upper ends abut against adjusting-nuts 60, thearrangement being su ch that by turning down the nuts 5 the tension ofthe springs will be increased and the plate G2 will be held closer tothe bottom of the feeder-box.

To the end of the shaft G7, I connect a crankarm, 71, and this crank-armin turn is con 1o nected by a rod, 73, with a crank-ar1n,7 2, that iscarried by the shaft 41, the crank-arm 72, however, being much shorterthan the arm 71, so that as the shaft 41 is revolved a partial rotarymotion will be imparted to the shaft G7. In Order that the sieve may becleared, I place upon it a number of polygonal balls, 80, the number ofthese balls varying with the character of the material that is beingoperated upon. zo By mounting the sieve as above described I'provide forthe movement of the sieve inany direction desired, and thus render itpossible for the sieve to be carried to and fro in an elliptical pathwhen the shafts 34 and 35 are revolved; and by making the hangerconnections as above described I provide for a proper adjustment of thesieveframe, and .byl adjustably connecting the crank-pins to their disksI am able to vary the path through which the sieve is carried to meetthe requirements of the particular material that is being operated upon.

In a companion application, Serial No.

255,404, I show and describe a shaking-bolt having some of the generalfeatures of this.

In said application I have claim ed the swinging hopper apron or platemore broadly than in this, and also claimed specifically the dilferentmeans v therein shown and described for suspending and adjusting saidapron or plate. I have likewise described and claimed means forimparting a circular or elliptical movement to the sieve.

Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent- A 1. Thecombination of the frame l0, the i slotted brackets 11, the bolts 12,the angular arms 13, having their horizontal arms snpported by saidbolts, and having their verti- 5o cal arms slotted and provided withlugs 17, having vertical set-screws 16, the angular brackets 14,adjustable On the slotted arms above the set-screws, on which they rest,and the sieve having brackets 21 on its sides, with 55 the hangers 18,provided with universal joints connecting them to the brackets 14 and21, respectively, substantially as set forth,

2. The combination, in a flour-bolt with the feeder, Of dependingswinging arms at oppo- 6o site sides thereof, a plate at the lower endsof. said arms, vertically-movable connections between said plate andarms, springs allowing a yielding movement between the arms andconnections, and means for oscillating said plate, substantially as setforth.

3. The combination, with the feeder, of the dependn g slotted swingingarms at Opposite sides thereof, provided with outwardeproject ingsidelugs, a plate extending under the dis- 7o charge-end of the feeder,provided with rods extending upwardly through the said lugs and slidingfreely therein, and lugs 63, engaging the slotted arms, and the springssupporting the rods yieldingly, substantially as set forth.

4. In a flour-bolt, the combination, with the sieve and its frame, ofthe apertured slats extending across the .under side of said frame,blocks on the under side of the sieve, screws or pins extending fromsaidl blocks down through the Slat-apertures, and springs on said screwsor pins, substantially as set forth.

5. In a Hour-bolt, the combination, with the sieve having blocks on itsunder face, and the frame to which the sieve is secured having aperturedslats on its lower side, of the headed screws passing up through theapertures in the slats into the said blocks, the heads of the screwsresting aga-inst the lower surfaces of said slats and limiting theupward movement 9o of the screws and sieve, and the springs on v.thescrews between the blocks and slats, substantially as set forth.

JOHN JOHNSTON.'

Witnesses:

OLE. Q. MY-HRE, EvEN JOHNSON.

